Abstract:
:The combined effects of pH, water activity (aw), oxygen (O2) and carbon dioxide (CO2) levels on growth and sporulation of 10 common food-borne fungi were studied. The use of a multivariate statistical method (PLS) for the analysis of data showed that the fungi could be grouped according to their physiological response to changes in the four tested factors. Carbon dioxide, aw and pH were found to be the most significant factors describing differences and similarities among the fungi. Maximal inhibitory effect of elevated levels of CO2 (5-25%) and decreased aw (0.99-0.95) varied among the 10 species from 6 to 77% and from 52 to 100%, respectively. Sporulation of the fungi was sensitive to all tested factors. Furthermore, interaction of CO2 and aw displayed a significant effect on sporulation. It was shown that different fungal species associated with the same ecosystem responded similarly to changes in the tested factors. Thus, fungi which are not phylogenetically related may be physiologically related or show a common strategy of life.
journal_name
J Appl Microbioljournal_title
Journal of applied microbiologyauthors
Haasum I,Nielsen PVdoi
10.1046/j.1365-2672.1998.00368.xsubject
Has Abstractpub_date
1998-03-01 00:00:00pages
451-60issue
3eissn
1364-5072issn
1365-2672journal_volume
84pub_type
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